90+3x=x

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Solution for 90+3x=x equation:


Simplifying
90 + 3x = x

Solving
90 + 3x = x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-1x' to each side of the equation.
90 + 3x + -1x = x + -1x

Combine like terms: 3x + -1x = 2x
90 + 2x = x + -1x

Combine like terms: x + -1x = 0
90 + 2x = 0

Add '-90' to each side of the equation.
90 + -90 + 2x = 0 + -90

Combine like terms: 90 + -90 = 0
0 + 2x = 0 + -90
2x = 0 + -90

Combine like terms: 0 + -90 = -90
2x = -90

Divide each side by '2'.
x = -45

Simplifying
x = -45

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